Parser support for across some, manifest arrays, and invariants/variants in across loops.
Merge branch 'master' of github.com:scottgw/language-eiffel

Conflicts:
	Language/Eiffel/Parser/Expr.hs
	Language/Eiffel/Parser/Lex.hs
	Language/Eiffel/Parser/Statement.hs
	Language/Eiffel/PrettyPrint.hs
	Language/Eiffel/Syntax.hs
Real merge